Arbitrary phase-locking in Mach–Zehnder interferometer

2019 ◽  
Vol 442 ◽  
pp. 148-151
Author(s):  
Shuhe Wu ◽  
Wenfeng Huang ◽  
Peiyu Yang ◽  
Shuqi Liu ◽  
Liqing Chen
2011 ◽  
Vol 19 (23) ◽  
pp. 23202 ◽  
Author(s):  
Mark Shtaif ◽  
Curtis R. Menyuk ◽  
Michael L. Dennis ◽  
Michael C. Gross

2020 ◽  
Vol 18 (01) ◽  
pp. 1941019
Author(s):  
Dario Gatto ◽  
Paolo Facchi ◽  
Vincenzo Tamma

We address the problem of distributed quantum metrology with a single squeezed-vacuum source by using the formalism of quantum mechanics in phase space. In particular, we demonstrate Heisenberg-limited sensitivity in the measurement of the average of two arbitrary phase shifts in the arms of a Mach–Zehnder interferometer. We obtain exact results for the measurement probability at the interferometer output for any value of the phases, which give us insight into the emergence of Heisenberg-limited sensitivity for periodical values of the phases.


1997 ◽  
Vol 33 (16) ◽  
pp. 1404 ◽  
Author(s):  
P. Gunning ◽  
J.K. Lucek ◽  
D. Nesset ◽  
J.V. Collins ◽  
C.W. Ford ◽  
...  

2021 ◽  
Vol 1918 (2) ◽  
pp. 022010
Author(s):  
Ian Yulianti ◽  
N M Dharma Putra ◽  
Fianti ◽  
H Rumiana ◽  
Z A F Latif ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byoung S. Ham

AbstractSo far, unconditional security in key distribution processes has been confined to quantum key distribution (QKD) protocols based on the no-cloning theorem of nonorthogonal bases. Recently, a completely different approach, the unconditionally secured classical key distribution (USCKD), has been proposed for unconditional security in the purely classical regime. Unlike QKD, both classical channels and orthogonal bases are key ingredients in USCKD, where unconditional security is provided by deterministic randomness via path superposition-based reversible unitary transformations in a coupled Mach–Zehnder interferometer. Here, the first experimental demonstration of the USCKD protocol is presented.


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